Self-locking spike and tie-plate.



0. s. LUND.

SELF LOCKING SPIKE AND TIE PLATE. APPLICATION FILED MAK. 18, 1914.

Patented Feb. 23, 1915.

0, AS. 32m

OLAF SIG-VART LUND, OF BANCROFT, IOWA.

SELF-LOCKING SPIKE AND TIE-PLATE.

To all whom it may concern:

Be it known that I, OLAr SIGVART LUND, a citizen of Norway, residing at Bancroft, in the county of Kossuth, State of Iowa, have invented certain new'and useful Improvements in Self-Locking Spikes and Tie-Plates; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to railroad tracks and has special reference to a spike and tie plate for use in connection with such tracks.

One object of the invention is to provide an improved form of. spike which, when used with a tie plate, will lock against accidental withdrawal or loosening.

A second object of the invention is to provide an improved form of tie plate so arranged as to slightly tip the rails inwardtoward the center of the track when placed on a horizontal tie surface.

With the above and other objects in view the invention consists in general of certain novel details of construction and combination of parts hereinafter fully described, illustratedin the accompanying drawings, and specifically claimed.

In the accompanying drawings like characters of reference indicate like parts in the several views, and Figure 1 is a transversesection through a rail and the improved tie plate, the spikes being shown in position. Fig. 2 is a bottom plan view of the tie plate.

In carrying out the objects of this invention there is provided a tie plate having a flat bottom surface 10 and disposed centrally of this bottom surface is a rib 11 which is triangular in cross section, both sides of the rib being inclined at the same angle with respect to the adjacent portions of the tie plate. Spaced from the rib 11 are other ribs 12 and the outer side of each of these ribs 12 is vertically disposed witl respect to the tie plate under surface and the inner sides of the ribs 12 are inclinedsimilar to the inclined side of the rib 11. This tie plate is provided with four rectangular spike holes or openings 13 and thus Specification of Letters Patent.

Patented Feb. 23, 1915.

Applicationvfiled March 18, 1914. Serial No. 825,810.

four spikes can be used if desired or two can be driven, either opposite each other, or in diagonal disposition. The upper surface of the tie plate is inclined downward to ward the inner side so that the inner edge of the tie plate is somewhat thinner than the part against which the outer edge of the rail base rests. A rib 14 is formed along this thickened partand against this rib butts the edge of the base of the rail 15. The plate thus can be placed upon an ordinary tie and the ribs 11 and 12 engaged in the material of the tie and by reason of the perpendicular sides of the ribs 12 any side slipping of said plate will be prevented. Furthermore by reason of the tapered transverse structure of the tie plate the head of the rail will be tilted slightly inward so as to prevent over-turning of the rail due to side swing of the engine or cars. In connection with this tie plate there is provided a spike 15 which is of the ordinary shape with the section that is adjacent the head cut away as at 16 to provide a shoulder 17 Moreover the back of this spike is provided with a curved portion 18. When a spike such as this is driven in the tie through the tie plate opening 13 it passes down through said opening in the usual manner but when the curved portion 18 contacts with the outer part of the opening or outer wall'thereof the upper end of the spike is forced inward until the shoulder 1 engages the tie plate and locks the spike from accidental movement. The spike, however, can be removed by first lifting the same slightly and then bending it forward so that the shoulder 17 is disengaged from to extend transversely of the tie, said ribs In. testiinony whereof, I afiix my signaconllprising ail cebnter rib hiwing fboltlh sildes ture, in the presence of two witnesses.

inc me to t e ottom sur ace 0 t e ate and two lateral ribs each having its guter OLAF SIGVART LUND' side perpendicular to the bottom of the Witnesses: plate and its inner side inclined with re- LENA N. Fmccn, spect thereto, W. E. BAKER. 

